The nature of hot reload in libxposed API 102?

[victay44]

Per this commit's description, a module that hooks system_server should no longer requires a reboot.
I wonder if this only applies to a module that already hooked into and started with system_server, so updating it won't necessitate a reboot. Or a new module can seamlessly hooks into system_server as well? Would it work also with DISABLING a module that hooks system_server?

In my test a new module won't be active until I reboot, but Idk if that's the intended behavior or if the hot reload doesn't do its supposed things correctly. My device is lineageOS A15 with Vector 2.2 release build.